Clinical Trial Registration

Authors should follow the relevant guidelines for the care and use of laboratory animals of their institution or national animal welfare committee. For the sake of transparency in regard to the performance and reporting of clinical trials, we endorse the policy of the International Committee of Medical Journal Editors to refuse to publish papers on clinical trial results if the trial was not recorded in a publicly-accessible registry at its outset. The register now available
is http://www.clinicaltrials.gov sponsored by the United States National Library of Medicine, we encourage all potential contributors to register with it. However, in the event that other registers become available, such as